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Showing 1 to 10 of 10 for “"ice shape"”.
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Unsteady modes in the flowfield about an airfoil with a leading-edge horn-ice shape
… flowfield of an airfoil with a leading-edge horn-ice shape was performed in the current study. An NACA 0012 airfoil was tested in a subsonic wind tunnel at Re = 1.8 × 106. In addition to the clean configuration, the airfoil model was also tested with a set of boundary-layer trips, a …
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Effects of Supercooled Large -Droplet Icing on Airfoil Aerodynamics
The effects of simulated ice shape on the NLF 0414 were quite different from the NACA 23012m. There was little variation of lift when the simulated ice-shape location was varied from 2% to 20% chord. The large losses in lift occurred when the ice shape was located downstream of 30% chord, and the …
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Numerical Simulations of Iced Airfoils and Wings
… the effects of simulated ridge and leading-edge ice shapes on the aerodynamic performance of airfoils and wings. In the first part of this study, a range of Reynolds numbers and Mach numbers, as well as ice-shape sizes and ice-shape locations were examined for various airfoils with the …
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Aerodynamics of a swept wing with leading-edge ice at low Reynolds number
… study of the aerodynamics of a swept wing with ice at low Reynolds number has been performed. The goal of this work was to demonstrate the use of various experimental techniques applied to understanding the aerodynamic effects of a leading-edge ice simulation on a highly swept, high-aspect ratio …
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Use of hybrid airfoil design in icing wind tunnel tests of large scale swept wings
In-flight ice accretion is an important safety consideration for modern aircraft. The certification of commercial airliners for flight into known icing is difficult due to the expense and challenge in finding the desired icing conditions in flight. The large size of commercial aircraft relative to …
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Design of 3D swept wing hybrid models for icing wind tunnel tests
… during the design and certification of aircraft ice-protection systems to provide a controlled and repeatable environment to mitigate risks, reduce costs, and validate the existing computational icing tools. However, the existing icing wind tunnel facilities cannot accommodate large wings such as …
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Experimental Study of Full-Scale Iced -Airfoil Aerodynamic Performance Using Sub-Scale Simulations
Determining the aerodynamic effects of ice accretion on aircraft surfaces is an important step in aircraft design and certification. The goal of this work was to develop a complete sub-scale wind tunnel simulation methodology based on knowledge of the detailed iced-airfoil flowfield that allows the …
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Validation of 3-D ice accretion documentation and replication method including pressure-sensitive paint
Accurate representation of ice accretions is important to the study and understanding of aircraft icing. For research and certification purposes, replicas of ice accretions generated from icing wind tunnels are fabricated to perform aerodynamic tests in dry-air wind tunnels. The currently employed …
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Experimental study of full-scale iced-airfoil aerodynamic performance using sub-scale simulations
Determining the aerodynamic effects of ice accretion on aircraft surfaces is an important step in aircraft design and certification. The goal of this work was to develop a complete sub-scale wind tunnel simulation methodology based on knowledge of the detailed iced-airfoil flowfield that allows the …
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Large-scale swept-wing ice accretion modeling in the NASA Glenn Icing Research Tunnel using LEWICE3D
… throughout the design and certification of anti-ice systems. However, computational methods alone are not sufficient for aircraft certification. Icing wind tunnels are used for aircraft certification to reduce costs, provide a controlled test matrix of conditions, and validate computational icing …